<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script src='../js/ifTest4.js'></script>
</head>
<body>
<h1>If Example4</h1>
<form method='post' action='' name='frm'>
	<input type='number' name='su1'/>
	<input type='text' name='oper' size='4'/>
	<input type='number' name='su2'/>
	<p/>
	<input type='button' value ='확인' id='btn'/><br/>
</form>
<script>ifTest4();</script>
</body>
</html>